oats {aster} | R Documentation |

Data on life history traits for the
invasive California wild oat *Avena barbata*

data(oats)

A data frame with records for 821 plants. Data are already in “long” format; no need to reshape.

- resp
Response vector.

- varb
Categorical. Gives node of graphical model corresponding to each component of

`resp`

. See details below.- root
All ones. Root variables for graphical model.

- id
Categorical. Indicates individual plants.

- Plant.id
Categorical. Another indicator of individual plants.

- Env
Categorical. Environment in which plant was grown, a combination of experimental site and year.

- Gen
Categorical. Ecotype of plant: mesic (M) or xeric (X).

- Fam
Categorical. Accession, nested within ecotype.

- Site
Categorical. Experiment site. Two sites in these data.

- Year
Categorical. Year in which data were collected. Four years in these data.

- fit
Indicator (zero or one). Shorthand for

`as.numeric(oats$varb == "Spike")`

. So-called because the components of`outcome`

indicated are the best surrogate of Darwinian fitness in these data.

The levels of `varb`

indicate nodes of the graphical model to which
the corresponding elements of the response vector `resp`

belong.
This is the typical “long” format produced by the R `reshape`

function. For each individual, there are several response variables.
All response variables are combined in one vector `resp`

.
The variable `varb`

indicates which “original” variable
the number was for. The variable `id`

indicates which individual
the number was for. The levels of `varb`

, which are the names
of the “original” variables are

- Surv
Indicator (zero or one). Bernoulli, One if individual survived to produce flowers.

- Spike
Integer. Zero-truncated Poisson, number of spikelets (compound floral structures) observed.

Graphical model is

*1 -> Surv -> Spike.*

Robert Latta https://www.dal.ca/faculty/science/biology/faculty-staff/our-faculty/robert-latta.html

These data are a subset of data previously analyzed using non-aster methods in the following.

Latta, R. G. (2009).
Testing for local adaptation in *Avena barbata*,
a classic example of ecotypic divergence.
*Molecular Ecology*, **18**, 3781–3791.
doi: 10.1111/j.1365-294X.2009.04302.x.

These data are reanalyzed by aster methods in the following.

Geyer, C. J., Ridley, C. E., Latta, R. G., Etterson, J. R.,
and Shaw, R. G. (2013)
Local Adaptation and Genetic Effects on Fitness: Calculations
for Exponential Family Models with Random Effects.
*Annals of Applied Statistics*, **7**, 1778–1795.
doi: 10.1214/13-AOAS653.

data(oats)

[Package *aster* version 1.1-2 Index]